Also wish Russ had shown acme in a full screen setup, one of the most awesome things about acme is how well it manages having tons of windows, and you don't get a real feeling for it without seeing it done in a real full screen large environment.
[1] (How strong? Well, the current frames I'm wearing aren't the frames I initially chose; they're the frames I chose out of the set of frames that have the earpieces connected far enough back to allow them to fold closed given the thickness of the lenses I wear. The fact nobody warned me about this when I picked out my first set of frames indicates it likely doesn't happen a whole lot.)
Just keep your code window small enough that it doesn't make your eyes glaze over.
I know lots of people have strong feelings about this highlighting or that, but honestly, just try going without it for a week or two. I bet you'll find it is not that big a deal after all.